<html>
    <head>
        <link rel="stylesheet" type="text/css" href="css/core.css" />
        
    </head>
    <body>
        <div id="container">
            <div id="header">
                {header_menu}
            </div>
            <div id="content">
                {content}
            </div>
        </div>
    </body>
</html>